Unserstanding the value behind java.util.concurrent.Semaphore class. more »

Did you know that the java.util.concurrency.ConcurrentMap provides some very useful methods beyond the ones provided by the traditional java.util.Map interface? The java.util.concurrency.ConcurrentMap is implemented by java.util.concurrency.ConcurrentH… more »

After some time, I'm writing again. Hope I do not stay so long without posting again. The ThreadLocal class allow you to set values that are accessible from the thread that stored such value. Using a thread local you can set the value and as long a… more »

I’ve never worked with stateful session beans in the real world. However, as I’m preparing to take the EJB 3.1 developer certification I’m playing with activation and passivation to prove the concepts and see how it works in practice. To prove t… more »

As I've seen a lot of access to the blog from english speaking countries, I'll start to blog in english from now on. Well, since the Java EE spec was out I always had a doubt regarding how an EJB reference works when it's left in a multi-threaded env… more »